Ironing mold and formed material manufacturing method
US9527128B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 10, 2013 |
| Grant date | Dec 27, 2016 |
| Priority date | — |
| Expiry date | Jul 10, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21K23/00
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An ironing mold according to the present invention includes a punch that is inserted into a formed portion, and a die having a pushing hole into which the formed portion is pushed together with the punch. An inner peripheral surface extends non-parallel to an outer peripheral surface of the punch, and the inner peripheral surface is provided with a clearance that corresponds to an uneven plate thickness distribution, in the pushing direction, of the formed portion prior to the ironing relative to the outer peripheral surface to ensure that an amount of ironing applied to the formed portion remains constant in the pushing direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.